Title of Paper:New HB-weighted time delay estimation algorithm under impulsive noise environment

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Date of Publication:2008-12-01

Journal:JOURNAL OF SYSTEMS ENGINEERING AND ELECTRONICS

Included Journals:SCIE

Volume:19

Issue:6

Page Number:1102-1108

ISSN No.:1004-4132

Key Words:HB weighted; time delay; covariation; fractional lower order covariance

Abstract:The traditional HB-weighted time-delay estimation (TDE) method degenerates under the impulsive noise environment. Two new time-delay estimation methods are proposed based on fractional lower order statistics (FLOS) according to the impulsive characteristics of fractional lower order a-stable noises. Theoretic analysis and computer simulations indicate that the proposed covariation based HB weighted (COV-HB) algorithm can suppress impulsive noises in one received signal for 1 <= alpha <= 2, whereas the other proposed fractional lower order covariance-based HB weighted (FLOC-HB) algorithm has robust performance under arbitrary impulsive noise conditions for the whole range of 0 < alpha <= 2.